S
M
T
W
T
F
S
30
72°
59°
31
73°
57°
1
72°
50°
2
68°
54°
3
79°
64°
4
68°
55°
5
72°
52°
6
77°
55°
7
75°
59°
8
63°
52°
9
64°
52°
10
70°
55°
11
68°
57°
12
73°
54°
13
70°
63°
14
75°
63°
15
72°
55°
16
64°
54°
17
68°
54°
18
66°
48°
19
72°
61°
20
66°
50°
21
72°
48°
22
73°
55°
23
72°
50°
24
66°
46°
25
73°
52°
26
70°
48°
27
70°
54°
28
66°
54°
29
73°
59°
30
72°
61°
1
70°
52°
2
70°
50°
3
64°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Colchester
Colchester's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Colchester. See also: October | November | December.
